Aeroflow Performance | Huge range of performance car parts
In stock
Part Number
USD 1,173.29

BOOSTED 5856 Subaru WRX 2002-2007 & STI 2004-2021 Bolt On Internal Wastegate Turbocharger 550HP, Natural Cast Finish
Subaru 3 Bolt Inlet Flange, Subaru 5-Bolt Exhaust Flange

Aeroflow Performance Boosted turbochargers are designed specifically for the enthusiast who wants optimal performance at a competitive price. Boosted Turbochargers have a range of specific turbos to meet your power goals, driving style and budget. Boosted turbocharger's utilise billet compressor wheels and feature the latest aerodynamic design that maximises horsepower and boost response throughout the rev range. The turbine wheel is constructed from Inconel, a Super Alloy that maintains strength during prolonged exposure to extremely high exhaust gas temperatures.

Boosted Turbocharger's are available in 360° journal bearing, dual and triple ceramic ball bearing cartridges designed to prolong the turbo lifespan and improve shaft balance. Boosted Turbocharger's are also available in oil/water or oil cooled versions to help keep temperatures to a minimum. The boosted range of turbos are available with a ported shroud compressor cover housing which increases surge resistance and provides reliable, continuous power throughout the engine's RPM. Boosted turbochargers are available for a direct bolt-on for some Ford's and Nissan's with further models in development. Boosted turbos are available in natural aluminium or high temp black compressor cover options.

BOOSTED 5856 SUBARU EJ Turbocharger Specifications

Recommended horsepower rating:  400-600HP
Recommended engine displacement:  2L to 2.5L

- Dual ceramic ball bearing
- Billet aluminium compressor wheel
- Slip On compressor cover inlet (80mm)
- Slip on compressor cover outlet (52mm)
- Subaru 3 Bolt turbine inlet flange
- Internal Oil Restrictor Built into turbocharger core
- Will suit standard coolant lines or M12 x 1.25mm coolant fittings sold separately
- Will suit standard turbo drain or turbo drain adapter (Sold separately, AF463-01 or AF463-05)
- 5-Bolt Subaru turbine outlet flange (3 x M10 x 1.25mm threads)
- SiMo-nodular cast iron rear housing
- M12 x 1.25mm coolant fitting port thread
- M10 x 1.50mm oil feed fitting with in-built restrictor in turbocharger core
- 38mm bolt centre turbo drain plate with M6 x 1.25mm thread size
- Internal wastegate with 14psi spring and 33mm Hole

Compressor Specifications
Inducer:  58mm
Exducer:  71.4mm
Extended Tip:  74mm
Compressor Inlet: Slip On
Compressor Outlet: Slip On

Turbine Specifications
Inducer:  60mm
Exducer:  56mm
A/R:  8cm
Turbine Inlet Flange:  3 Bolt Subaru
Turbine Outlet Flange:  5-Bolt Subaru

Internal wastegate with 14psi actuator

Boosted by Aeroflow products are manufactured to industry standard specifications from quality materials. Utmost care is taken to ensure products are free from blemishes, inconsistencies and defects. Aeroflow products carry a one year warranty from the date of purchase however warranty will be void if the product is not used in the correct way for which it was intended. Boosted Turbochargers and replacement parts are designed for street use only. Products used in race applications and/or products that have been modified, damaged, incorrectly installed or incorrectly/poorly maintained are not covered by this warranty. Proof of purchase will be required for all warranty claims.

This Boosted ball bearing turbocharger from Aeroflow Performance does not feature an internal oil flow restrictor. A -4AN fitting is provided with a built in external oil feed restrictor and must be used to ensure oil does not push past the seals and shorten the life span of the turbocharger. Should you choose not to use the provided -4AN fitting then an external oil feed restrictor (AF399-04 or AF399-03, available for purchase separately) must be installed in the turbo oil feed line at the engine side and turbo side of the line. Failure to use a suitable restrictor will void the warranty. Boosted turbochargers that feature water cooling ports must have these ports connected to the water cooling system in order to cool the turbocharger core. Failure to connect any and all of these ports will void all warranties.

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